Iron Chlorosis

Iron deficiencies in Oaks: Oak trees are often seen in early spring with very yellow leaves. This is a problem called chlorosis. This is caused when the pH in the soil gets too high, often from the fertilization of lawns. Oak trees then cannot pick up the available iron in the soil and their leaves will turn yellow, making them more susceptible to infection from other disorders.

Solution: To mitigate this, we do several things; first, we take a soil sample to see where your soil’s pH is at and plan to balance the pH with soil amendments. Depending on the severity of the chlorosis, we then inject the tree with iron, which is best done in the fall, to solve the short-term iron deficiency in the tree. If your oak tree’s leaves were yellow this spring or if they are still yellow, please contact us and we can help fix this before it gets much worse.

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